As jrsva points out, the absurdity checker often gets the message backwards, telling you the price seems high when it is actually low or that it seems low when it is actually high.

Also, prices you attempt to post may be rejected by the system (i.e., not made visible to other users) regardless of whether the warning appears (and, if it does, regardless of whether you reply "yes") if the prices seem too high or too low to what is apparently a second absurdity checker. Where I live, price differences between nearby stations can be as much as $1.50 per gallon, so it is often a problem that the correct prices are rejected. Unfortunately, incorrect prices that seem more correct to the absurdity checker are accepted, leading to a proliferation of inaccurate prices on the site.

Having recently made a cross-country trip, I experienced the same thing when I updated prices a short distance from the station (i.e., I posted the price as the other driver was driving, though not necessarily right at the station).

Just wondering, were you any distance from the station that the "checker" might have thought the price was somewhat out-of-line compared to stations closer to you at the time of posting?

Or could it simply be possible that the price post, somehow, was compared internally to your home location, and the posted price seemed wrong.

In my case, I simply accepted the questioning as Gas Buddy insuring that prices are posted accurately. If the computer asking me about price accuracy is the worst that happens to me on this website, I'd rather have that than the much maligned posting of diesel prices at stations with no diesel, or "prices posted for points but not for accuracy", etc. (that have been discussed in other topics).

GB’s “absurdity checker” does this sort of thing all the time. There is something really out of whack with it. It is a good idea. They are trying to detect typos but it is useless unless they can get the bugs out of it.